• TECHKNOW
  • TECHKNOW

    Resize
    Dock/Undock
    NEW FAQ ADDED





    X

    Groove-Turn & Parting Inserts Wear Problems and Solutions

    GROOVE-TURN INSERTS
    PARTING OFF
    FACE GROOVING


    Type of Wear
      • ×
        Flank Wear
        Flank Wear
        Cause
        • High cutting speed
        • Low wear resistance carbide grade

        Remedy
        • Reduce cutting speed
        • Use harder grade
        • Increase coolant pressure
        • Adjust center height position
      • ×
        Crater Wear
        Crater Wear
        Cause
        • Excessive cutting temperatures and pressures on the top of the insert.

        Remedy
        • Reduce cutting speed
        • Reduce feed rate
        • Use harder grade
        • Increase coolant pressure
        • Use an insert with a positive cutting rake
      • ×
        Plastic Deformation
        Plastic Deformation
        Cause
        • Cutting temperature is too high

        Remedy
        • Reduce cutting speed
        • Reduce feed rate
        • Use harder grade
        • Increase coolant pressure
      • ×
        Notch Wear
        Notch Wear
        Cause
        • Cutting speed too high, or insufficient insert wear resistance of the carbide grade

        Remedy
        • Reduce the cutting speed
        • Reduce the feed rate
        • Use harder grade
        • Vary the cutting depth
        • Increase coolant pressure
      • ×
        Thermal Cracking
        Thermal Cracking
        Cause
        • Excessive variations in surface temperature, intermittent machining, or variations in coolant supply

        Remedy
        • Reduce cutting speed
        • Reduce feed rate
        • Use tougher grade
        • Use stronger edge geometry
        • Turn off coolant supply when machining interrupted cuts
      • ×
        Edge Fracture
        Edge Fracture
        Cause
        • Caused by excessive insert wear before indexing the insert
        • The grade and geometry could be too weak for the applications
        • Excessive load on the insert
        • Built-up edge has been formed on the insert

        Remedy
        • Reduce the cutting speed
        • Use tougher grade
        • Reduce the feed rate
        • Use more stable tool holder
        • Use reinforced cutting edge negative cutting rake
        • Use screw clamping instead of self clamping
        • Adjust center height position
        • Reduce tool extension
      • ×
        Built-up Edge
        Built-up Edge
        Cause
        • Cutting zone temperature is too low
        • Negative cutting geometry
        • Machining of very sticky materials such as low-carbon steel, stainless steels, and aluminum

        Remedy
        • Increase the cutting speed
        • Use an indexable insert with a sharper cutting edge
        • Increase the coolant pressure
      • ×
        Flank Wear
        Flank Wear
        Cause
        • High cutting speed
        • Low wear resistance carbide grade

        Remedy
        • Reduce cutting speed
        • Use harder grade
        • Increase coolant pressure
        • Adjust center height position
      • ×
        Crater Wear
        Crater Wear
        Cause
        • Excessive cutting temperatures and pressures on the top of the insert.

        Remedy
        • Use harder grade
        • Reduce cutting speed
        • Increase coolant pressure
        • Use an insert with a positive cutting rake
      • ×
        Plastic Deformation
        Plastic Deformation
        Cause
        • Cutting temperature is too high

        Remedy
        • Use harder grade
        • Reduce feed rate
        • Reduce cutting speed
        • Increase coolant pressure
      • ×
        Notch Wear
        Notch Wear
        Cause
        • Cutting speed too high, or insufficient insert wear resistance of the carbide grade

        Remedy
        • Reduce the cutting speed
        • Use harder grade
        • Use reinforced cutting edge negative cutting rake
        • Adjust center height position
        • Increase the coolant pressure
      • ×
        Thermal Cracking
        Thermal Cracking
        Cause
        • Excessive variations in surface temperature, intermittent machining, or variations in coolant supply

        Remedy
        • Reduce cutting speed
        • Reduce feed rate
        • Use tougher grade
        • Use stronger edge geometry
        • Turn off coolant supply when machining interrupted cuts
      • ×
        Edge Fracture
        Edge Fracture
        Cause
        • Caused by excessive insert wear before indexing the insert
        • The grade and geometry could be too weak for the applications
        • Excessive load on the insert
        • Built-up edge has been formed on the insert

        Remedy
        • Reduce the cutting speed
        • Use tougher grade
        • Reduce feed rate
        • Reduce tool extension
        • Use more stable tool holder
        • Use reinforced cutting edge negative cutting rake
        • Use screw clamping instead of self clamping
        • Check center height position
        • Use screw clamping instead of self- clamping
      • ×
        Built-up Edge
        Built-up Edge
        Cause
        • Cutting zone temperature is too low
        • Negative cutting geometry
        • Machining of very sticky materials such as low-carbon steel, stainless steels, and aluminum

        Remedy
        • Increase the cutting speed
        • Use an insert with a positive cutting rake
        • Increase the coolant pressure
      • ×
        Flank Wear
        Flank Wear
        Cause
        • High cutting speed
        • Low wear resistance carbide grade

        Remedy
        • Reduce cutting speed
        • Use harder grade
        • Increase coolant pressure
        • Adjust center height position
      • ×
        Crater Wear
        Crater Wear
        Cause
        • Excessive cutting temperatures and pressures on the top of the insert.

        Remedy
        • Use harder grade
        • Reduce cutting speed
        • Increase coolant pressure
        • Use an insert with a positive cutting rake
      • ×
        Plastic Deformation
        Plastic Deformation
        Cause
        • Cutting temperature is too high

        Remedy
        • Use harder grade
        • Reduce feed rate
        • Reduce cutting speed
        • Increase coolant pressure
      • ×
        Notch Wear
        Notch Wear
        Cause
        • Cutting speed too high, or insufficient insert wear resistance of the carbide grade

        Remedy
        • Reduce the cutting speed
        • Use harder grade
        • Use reinforced cutting edge negative cutting rake
        • Adjust center height position
        • Increase the coolant pressure
      • ×
        Thermal Cracking
        Thermal Cracking
        Cause
        • Excessive variations in surface temperature, intermittent machining, or variations in coolant supply

        Remedy
        • Reduce cutting speed
        • Reduce feed rate
        • Use tougher grade
        • Use stronger edge geometry
        • Turn off coolant supply when machining interrupted cuts
      • ×
        Edge Fracture
        Edge Fracture
        Cause
        • Caused by excessive insert wear before indexing the insert
        • The grade and geometry could be too weak for the applications
        • Excessive load on the insert
        • Built-up edge has been formed on the insert

        Remedy
        • Reduce cutting speed
        • Use tougher grade
        • Reduce feed rate
        • Reduce tool extension
        • Use more stable tool holder
        • Use reinforced cutting edge negative cutting rake
        • Check center height
        • Use screw clamping instead of self- clamping
      • ×
        Built-up Edge
        Built-up Edge
        Cause
        • Cutting zone temperature is too low
        • Negative cutting geometry
        • Machining of very sticky materials such as low-carbon steel, stainless steels, and aluminum

        Remedy
        • Increase the cutting speed
        • Use an insert with a positive cutting rake
        • Increase the coolant pressure
    © ISCAR LTD. Manufacturer of Metalworking Tools (Iscar.com) All Rights Reserved